Epithelium Part 3: Glands Flashcards
What is the main difference between Endocrine and exocrine?
Glandes endocrines:
la connexion avec l’épithélium d’origine est perdue
SECRETE INTO BLOOD VESSELS
Glandes exocrines:
la connexion avec l’épithélium d’origine est maintenue
What are the 5 differentiators of exocrine glands?
Number of glandular cells
Mode of secretion of product
nature of product
Morphology of the sectering portion
morphology of the excreting canal
What are the two types of gladular cells in relation to number of cells and give examples.
Unicellular: Calciform Cells
Multicellular: Everything Else
What are the 3 modes of gland secretion and give an example per?
Merocrine: exotosis
(seen in pancreas and parotide; a retenir)
Apocrine:
Forme particulière d’exocytose où une partie
du cytoplasme et de la membrane plasmique
est expulsée avec le produit de sécrétion
Seen in mammary glands
Holocrine:
produit de sécrétion remplie
tout le cytoplasme. La cellule
est détruite après libération de
son produit de sécrétion
seen in glandes sebacees
What are sebaceous gland ?
A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals.
What are the two natures of product released by exocrine glands?
a) Les glandes séreuses
b) Les glandes muqueuses
What are serous glands? What is released and give an example.
enzymes release glands
pancreas et la parotide
cytoplasm is darker
nucleus more centered
What are muqueuses glands? What is released and give an example.
mucus release,
found in trachee
cytoplasm is much clearer
nucleus on the edge
What are sero-muqueuses glands? What is released and give an example.
glandes salivaires sous-maxillaires et sublinguales
they do both
What are the two special types of glands (in terms of product)?
glandes sudoripares (la sueur),
les glandes sébacées (le sébum)
What are the three morphologies of the glands?
glandes acineuse,
tubuleuse,
alveolaire
What are tubular glands, give an example.
tube allongé avec une paroi faite de cellules cubiques ou prismatiques
sweat glands, glands in the colon
Where might you find acineuse glands?
pancréas exocrine
parotide
What kind of gland is a sudoripare glande? (Properties)
Exocrine pluricellulaire tubuleuse contourne
Give an example of alveolar glands.
Sebacees glands (skin)
